Fix Gateway 0.2.27 release blockers

Author: lpalbou

CHANGELOG.md

@@ -25,6 +25,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Bundle-mode VisualFlow execution preserves Runtime structured LLM `data` outputs through data edges and Break Object while leaving `response` as text.
 - Bundle-mode structured LLM outputs can now drive `Answer User` and `Switch` nodes through `Break Object` without dropping the parsed data payload.
 - Gateway now reuses Runtime's published workspace-path and file-filter helpers, and the published package/HTTP app versions are aligned to `0.2.27` while the base/Apple/GPU dependency floor for `abstractagent` stays on the latest PyPI release line.
+- Gateway provider/model resolution now falls back to the service store base directory when embedded hosts expose stores without a full host config object, keeping backlog-assist and other hosted endpoints usable in lightweight service contexts.
 
 ## [0.2.26] - 2026-06-03
 

src/abstractgateway/routes/gateway.py

@@ -959,12 +959,23 @@ def _resolve_gateway_provider_model_or_400(
     model: Optional[str],
     purpose: str,
 ) -> tuple[str, str]:
+    def _gateway_service_base_dir(service: Any) -> Path:
+        cfg = getattr(service, "config", None)
+        data_dir = getattr(cfg, "data_dir", None)
+        if isinstance(data_dir, (str, Path)) and str(data_dir).strip():
+            return Path(str(data_dir)).expanduser().resolve()
+        stores = getattr(service, "stores", None)
+        base_dir = getattr(stores, "base_dir", None)
+        if isinstance(base_dir, (str, Path)) and str(base_dir).strip():
+            return Path(str(base_dir)).expanduser().resolve()
+        return gateway_data_dir_from_env().expanduser().resolve()
+
     try:
         svc = get_gateway_service()
         return resolve_gateway_provider_model(
             provider=provider,
             model=model,
-            base_dir=Path(svc.config.data_dir),
+            base_dir=_gateway_service_base_dir(svc),
             purpose=purpose,
         ).require()
     except ProviderModelConfigError as e:

tests/test_gateway_console.py

@@ -5,6 +5,7 @@
 import shutil
 import subprocess
 import tempfile
+from pathlib import Path
 
 from fastapi.testclient import TestClient
 import pytest
@@ -799,5 +800,8 @@ class Element {{
   throw new Error("sandbox SFX artifact should render as a blob-backed inline audio player");
 }}
 """
-    result = subprocess.run(["node", "--input-type=module", "-e", harness], capture_output=True, text=True, check=False)
+    with tempfile.TemporaryDirectory() as tmpdir:
+        harness_path = Path(tmpdir) / "gateway-console-inline-test.mjs"
+        harness_path.write_text(harness, encoding="utf-8")
+        result = subprocess.run(["node", str(harness_path)], capture_output=True, text=True, check=False)
     assert result.returncode == 0, result.stderr

tests/test_gateway_visualflow_file_nodes.py

@@ -205,9 +205,17 @@ def _is_completed():
         assert input_data.status_code == 200, input_data.text
         workspace_payload = input_data.json().get("workspace") or {}
 
-        ledger = client.get(f"/api/gateway/runs/{run_id}/ledger?after=0&limit=500", headers=headers)
-        assert ledger.status_code == 200, ledger.text
-        ledger_text = json.dumps(ledger.json().get("items") or [], sort_keys=True)
+        ledger_payload: dict = {}
+
+        def _ledger_contains_pdf_trace():
+            ledger = client.get(f"/api/gateway/runs/{run_id}/ledger?after=0&limit=500", headers=headers)
+            assert ledger.status_code == 200, ledger.text
+            ledger_payload["items"] = ledger.json().get("items") or []
+            ledger_text = json.dumps(ledger_payload["items"], sort_keys=True)
+            return "Gateway PDF Report" in ledger_text and "workspace-scoped PDF report" in ledger_text
+
+        _wait_until(_ledger_contains_pdf_trace, timeout_s=10.0, poll_s=0.1)
+        ledger_text = json.dumps(ledger_payload.get("items") or [], sort_keys=True)
 
     workspace = Path(str(workspace_payload.get("workspace_root") or ""))
     assert workspace.is_dir()